# Kikai Caldera

- **Country:** Japan
- **Coordinates:** 30.790000, 130.310000
- **Age:** 6,300 to 95,000 years ago
- **Arca:** "Ōsumi islands",30.6,130.2,12px, #777755, 10deg, 1.5, 0.75, 1
- **Arcb:** "Inner and Outer",30.82,130.37,12px, #ff0000, 0deg, 0.09, 7.5, 1
- **Arcc:** "Kikai Caldera",30.77,130.57,12px, #ff0000, 0deg, 0.09, 7.5, 1
- **Arcd:** "Ata South Caldera",31.15,130.85,12px, #ff00ff, 0deg, 0.09, 7.5, 1
- **Arce:** "Ata North Caldera",31.29,130.85,12px, #ff00ff, 0deg, 0.09, 7.5, 1
- **Arcf:** "Aria Caldera",31.54,130.87,12px, #ff00ff, 0deg, 0.09, 7.5, 1
- **Arcg:** "Kakuto",32.1,130.47,12px, #ff00ff, 0deg, 0.09, 7.5, 1
- **Arch:** "Caldera",31.99,130.47,12px, #ff00ff, 0deg, 0.09, 7.5, 1
- **Arci:** "Kobayashi",32.035,131.01,12px, #ff00ff, 0deg, 0.09, 7.5, 1
- **Arcj:** "Caldera",31.93,131.04,12px, #ff00ff, 0deg, 0.09, 7.5, 1
- **Zoom:** 8
- **Float:** center
- **Width:** 280
- **Height:** 450
- **Caption:** Map showing Kikai caldera in the Kagosima graben and other related caldera to the north with active volcanoes within graben as symbols
- **Country:** Japan
- **Highest:** Mount Iō (Iōjima)
- **Width Km:** 20
- **Image Map:** {{OSM Location map
- **Length Km:** 17
- **Settlement:** Mishima
- **Elevation M:** 704
- **Subdivision1:** Kagoshima Prefecture
- **Subdivision2:** Ōsumi Islands
- **Subdivision3:** Kagoshima District
- **Settlement Type:** Municipality
- **Highest Location:** Iōjima, Ōsumi Islands, Japan
- **Subdivision2 Type:** Region
- **Subdivision4 Type:** Subdivisions
- **Width Orientation:** EW
- **Length Orientation:** NS

The Kikai Caldera Complex has twin ovoid caldera by in diameter. The earliest definitive caldera formation has been dated back to at least 140,000 years ago, resulting from the eruption of Koabiyama pyroclastic flows.

![Photo of Kikai Caldera](https://upload.wikimedia.org/wikipedia/commons/c/c5/Kikai_Caldera_Relief_Map%2C_SRTM%2C_English.jpg)

**Source:** https://en.wikipedia.org/wiki/Kikai_Caldera (Wikipedia, CC BY-SA)